/Engine/Source/Runtime/CoreUObject/Public/Misc/PackageName.h
Checks if the string is a ShortPackageName. A ShortPackageName is the leaf name after the last slash in a LongPackageName. Handling ShortPackageNames is useful for console commands and other UI. A ShortPackageName requires a search to convert to a LongPackageName.
true if the given name is a short package name (contains no slashes), false otherwise.
static bool IsShortPackageName ( const [FString](API\Runtime\Core\Containers\FString) & PossiblyLongName )